1,721,083 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
An Ontology-Based Multi-Protocol Service Discovery Framework
No full textIn a pervasive computing scenario, a fundamental functionality is the discovery of available services: in fact, the first step in the long chain bringing an user to access a service is to find it. In the literature there are a number of service discovery protocols, each of them excelling in its particular field of application, and also a number of extensions to usual discovery architectures, especially to empower their descriptive capabilities. In any case it is missing an architecture able to solve the problem of the inter-working among different service discovery approaches -typically, each service discovery protocol has its own rules, and limitations -instead to have a common architecture able to use all actual protocols in the same way. In this paper we propose a service discovery framework which addresses this problem, introducing the concept of ontology -based multi-protocol service discovery: the proposed architecture, apart to use OWL to enhance, in the same common way, all descriptive capabilities of discovery protocols, is tailored to be compatible with all discovery protocols, due to the use of an opportune interface. This architecture has been deployed and tested using the SLP and UPnP service discovery protocols, integrated with the powerful descriptive functionalities offered by OWL. This work describes the results of the design activity which is being carried out within DAIDALOS II (designing advanced network interfaces for the delivery and administration of location independent, optimised personal services), a project granted in the European 6th Framework Research Programme, within the IST (Information Society and Technology) thematic area
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Towards Autonomous Brokered SLA Negotiation
No full textToday the whole contract lifecycle in eBusiness is handled manually. Contracts are not only written and agreed upon by humans, they have to be manually translated into technical terms to become an electronic contract. More and more research activities in eBusiness focus on the usage of electronic contracts (in particular Service Level Agreements) and how they can be created and enforced autonomously. So far, proposed solutions were not taken up by business users because of low flexibility, poor usability and high maintenance costs. This paper presents a proposal how “traditional” approaches can be extended to a broker-based solution valuable to business users, in particular small and medium-sized enterprises. The focus is on one of the main phases in the SLA-lifecycle – the negotiation phase. The paper describes how SLA negotiation can be outsourced to third parties and what the benefits and difficulties of such an approach would be
Towards Autonomous Brokered SLA Negotiation
No full textToday the whole contract lifecycle in eBusiness is handled manually. Contracts are not only written and agreed upon by humans, they have to be manually translated into technical terms to become an electronic contract. More and more research activities in eBusiness focus on the usage of electronic contracts (in particular Service Level Agreements) and how they can be created and enforced autonomously. So far, proposed solutions were not taken up by business users because of low flexibility, poor usability and high maintenance costs. This paper presents a proposal how “traditional” approaches can be extended to a broker-based solution valuable to business users, in particular small and medium-sized enterprises. The focus is on one of the main phases in the SLA-lifecycle – the negotiation phase. The paper describes how SLA negotiation can be outsourced to third parties and what the benefits and difficulties of such an approach would be
Cloud-based Computation Offloading for Mobile Devices: State of the Art, Challenges and Opportunities
No full textMobile cloud computing is a new rapidly growing field. In addition to the conventional fashion that mobile clients access cloud services as in the well-known client/server model, existing work has proposed to explore cloud functionalities in another perspective - offloading part of the mobile codes to the cloud for remote execution in order to optimize the application performance and energy efficiency of the mobile device. In this position paper, we investigate the state of the art of code offloading for mobile devices, highlight the significant challenges towards a more efficient cloud-based offloading framework, and also point out how existing technologies can provide us opportunities to facilitate the framework implementation
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